---
description: Genuine Omega 8500 date indicator 7228500A9144A28 for Caliber 8500. Swiss original calendar part for movement repair and restoration.
title: Omega 8500 Movement Date Indicator | Omega Movement Parts - Sofly
image: https://www.soflypart.com/wp-content/uploads/2019/06/8500A9144A28.jpg
---
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- **Omega 8500 Movement Date Indicator 7228500A9144A28**
[](https://www.soflypart.com/wp-content/uploads/2019/06/8500A9144A28.jpg)
[](https://www.soflypart.com/wp-content/uploads/2019/06/8500A9144A28B.jpg)
# Omega 8500 Movement Date Indicator 7228500A9144A28
$180.00
You Saved
| Brand | Choose an option Omega- 
Clear |
| --- | --- |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $180.00 |
| 3 - 4 | 5% | $171.00 |
| 5+ | 7% | $167.40 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $180.00 |
| 3 - 4 | 5% | $171.00 |
| 5+ | 7% | $167.40 |
Omega 8500 Movement Date Indicator 7228500A9144A28 quantity
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## Product Description
The **Omega 8500 Movement Date Indicator (7228500A9144A28)** is a genuine Swiss-made component for the **Omega Caliber 8500** Co‑Axial automatic movement. This date indicator is a critical part of the calendar mechanism, displaying the current date through the dial window. It is listed as a service part in the official Omega 8500 spare parts list under reference 9144.
## Features & Function
- **Genuine Omega part** – authentic Swiss-made component listed in official technical documentation
- **Calendar mechanism component** – displays the date through the dial window
- **Precision-printed numerals** – clear and legible date display
- **Service replacement part** – recognized in official Omega 8500 spare parts list
## Specifications
- **Part Number**: 7228500A9144A28
- **Compatible Movement**: Omega Caliber 8500 (Co‑Axial automatic)
- **Movement Diameter**: 29.00 mm
- **Movement Height**: 5.5 mm
- **Jewels**: 39
- **Frequency**: 25,200 vph (3.5 Hz)
- **Power Reserve**: 60 hours (two series-coupled barrels)
- **Date Display**: Window at 3 o’clock position
- **Origin**: Switzerland (Omega factory part)
- **Condition**: Brand new
## Applications
- **Service and overhaul** of Omega Caliber 8500 movements
- **Calendar mechanism repair** – replacing worn, faded, or damaged date indicators
- **Restoration** of De Ville Hour Vision, Seamaster Aqua Terra, Constellation, and other 8500‑powered models
- Suitable for **professional watchmakers** and **authorized service centers**
## FAQs
**1. Is this a genuine Omega part?**
Yes, this is a **genuine Omega factory part** (reference 7228500A9144A28), manufactured in Switzerland. It is listed in the official Omega 8500 spare parts list under “Date indicator”.
**2. What is the difference between 7228500A9144A28 and other 9144 variants (B04, D02, E24)?**
These are all genuine Omega date indicators for the Caliber 8500, with different color variants indicated by their suffixes:
- **A28** – specific color variant (please check with your supplier)
- **B04** – another color variant
- **D02** – white date disc with black numerals
- **E24** – yet another color variant
Please verify your specific reference with the official Omega parts list.
**3. What is the function of the date indicator?**
The date indicator is part of the **calendar mechanism** that displays the current date through the dial window at the 3 o’clock position. It is driven by the date indicator driving wheel during the date change at midnight.
## Why Choose SOFLY Watch Parts?
- Fast worldwide shipping within 3 business days.
- Competitive pricing on Seiko/Hattori calibers.
- 3,000+ watch movements and parts in stock.
- Trusted by watchmakers worldwide.
- Personalized sourcing support via **info@soflypart.com** or WhatsApp **+86 18620212114**.
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This date indicator is a critical part of the calendar mechanism, displaying the current date through the dial window. It is listed as a service part in the official Omega 8500 spare parts list under reference 9144. Features & Function Genuine Omega part\u00a0\u2013 authentic Swiss-made component listed in official technical documentation Calendar mechanism component\u00a0\u2013 displays the date through the dial window Precision-printed numerals\u00a0\u2013 clear and legible date display Service replacement part\u00a0\u2013 recognized in official Omega 8500 spare parts list Specifications Part Number: 7228500A9144A28 Compatible Movement: Omega Caliber 8500 (Co\u2011Axial automatic) Movement Diameter: 29.00 mm Movement Height: 5.5 mm Jewels: 39 Frequency: 25,200 vph (3.5 Hz) Power Reserve: 60 hours (two series-coupled barrels) Date Display: Window at 3 o'clock position Origin: Switzerland (Omega factory part) Condition: Brand new Applications Service and overhaul\u00a0of Omega Caliber 8500 movements Calendar mechanism repair\u00a0\u2013 replacing worn, faded, or damaged date indicators Restoration\u00a0of De Ville Hour Vision, Seamaster Aqua Terra, Constellation, and other 8500\u2011powered models Suitable for\u00a0professional watchmakers\u00a0and\u00a0authorized service centers FAQs 1. 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Features & Function Genuine Omega part\u00a0\u2013 authentic Swiss-made component listed in official technical documentation Calendar mechanism component\u00a0\u2013 displays the date through the dial window Precision-printed numerals\u00a0\u2013 clear and legible date display Service replacement part\u00a0\u2013 recognized in official Omega 8500 spare parts list Specifications Part Number: 7228500A9144A28 Compatible Movement: Omega Caliber 8500 (Co\u2011Axial automatic) Movement Diameter: 29.00 mm Movement Height: 5.5 mm Jewels: 39 Frequency: 25,200 vph (3.5 Hz) Power Reserve: 60 hours (two series-coupled barrels) Date Display: Window at 3 o'clock position Origin: Switzerland (Omega factory part) Condition: Brand new Applications Service and overhaul\u00a0of Omega Caliber 8500 movements Calendar mechanism repair\u00a0\u2013 replacing worn, faded, or damaged date indicators Restoration\u00a0of De Ville Hour Vision, Seamaster Aqua Terra, Constellation, and other 8500\u2011powered models Suitable for\u00a0professional watchmakers\u00a0and\u00a0authorized service centers FAQs 1. 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